This study describes a technique for estimating the effect of the data management tasks imposed on flight crews by new systems. It presents the development of a data base of data management tasks in current technology aircraft and examines the effect of four proposed new systems on the data management tasks of a flight crew in these aircraft. The annexes to the appendix represent data items and times for various emergency situations. Annex A shows the effect of hydraulic and filght control malfunction and Annex B presents the effect of engine failure due to fire. Times and data items for these conditions were developed in a United Airlines DC-10 flight simulator.